When ice is covered by a blanket, it does not melts, why?

Options

A. because blanket is woolen
B. because blanket Is a good conductor of heat
C. because blanket is thick
D. because blanket Is a bad conductor of heat

Answer

To understand why ice does not melt when covered by a blanket, we can break down the reasoning into clear steps:

### Step-by-Step Solution:

1. **Understanding the Initial Conditions**:
- Ice has a lower temperature compared to the surrounding environment (room temperature). When exposed to higher temperatures, ice tends to absorb heat and melt.

2. **Role of the Blanket**:
- When the ice is covered with a blanket, it acts as an insulating barrier between the ice and the warmer environment.

3. **Heat Transfer Mechanisms**:
- Heat can be transferred through conduction, convection, and radiation.
- Conduction is the transfer of heat through direct contact.
- Convection involves the movement of fluids (liquids or gases) carrying heat.
- Radiation is the transfer of heat through electromagnetic waves.

4. **Insulating Properties of the Blanket**:
- The blanket is made of materials that are poor conductors of heat (bad conductors). This means it does not allow heat to flow easily through it.
- Because the blanket is a bad conductor, it prevents heat from the environment from reaching the ice and also prevents any heat from the ice from escaping to the environment.

5. **Conclusion**:
- As a result of the insulating properties of the blanket, the ice does not absorb enough heat to melt.
- Although over time some heat may eventually reach the ice, the blanket significantly slows down this process, allowing the ice to remain solid for a longer period.

6. **Final Answer**:
- The correct reason why the ice does not melt when covered by a blanket is that the blanket is a bad conductor of heat.